Ladder adaptor device



FIG. 1 is a perspective view of the ladder adaptor device with a ladder and an exterior wall shown in phantom outline for illustrative purposes only, and form no part of the claimed design;

FIG. 2 is a front elevational view of a ladder adaptor device showing my new design;

FIG. 3 is a left side view, the right side view is a mirror image thereof;

FIG. 4 is rear elevational view;

FIG. 5 is a cross-sectional view taken along lines 5--5 of FIG. 2;

FIG. 6 is a top plan view; and,

FIG. 7 is a bottom plan view. 

The ornamental design for a ladder adaptor device, as shown and described. 